Saw-tooth-swaging machine.



Patented Oct. 3, I899.

F. E. BUTTS & G. A. DUM BECK.

SAW TOOTH SWAGING MACHINE.

(Application filed May 26, 1899.) 2 Sheets-Sheet (No Model.)

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No. 634,|64. Patented Oct. 3, I899. F. E.'BUTTS & G. A. DUMBECK.

SAW TOOTH SWAGING MACHINE.

(Application filed May 26, 1899.

2 Sheets-She t 2 (No Model.)

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in) STATES PATENT rrrcn.

FRANK E. BUTTS AND GUSTAV A. DUMBEOK, OF ERIE, PENNSYLVANIA.

SAW-TOOTH-SWAGING MACHINE.

SPECIFICATION forming part of Letters Patent No. 634,164, dated October3, 1899.

Application filed May 26,1899. Serial No. 718,821. (No model.)

To all whom it may concern:

Be it known that we, FRANK E. Burrs and GUSTAV A. DUMBEOK, citizens ofthe United States, residing at Erie, in the county of Erie and State ofPennsylvania, have invented certain new and useful Improvements in Saw-Tooth-Swaging Machines; and we do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, forming part of this specification.

This invention relates to saw-tooth-swaging machines; and it consists,substantially, in constructing the swaging mechanism with a depressiblestop or guide, against which the point of the saw-tooth contacts when onthe anvil ready for the swaging-cam to operate, so as to prevent theelongation of the point of the tooth while being swaged, this stop orguide being so constructed and arranged with reference to the anvil andswaging-cam that when the cam operates on the tooth as it rotatesthereon also engages the upper end of the stop or guide and depressesit, the side of the stop or guide, however, continuing to contact withthe end of the tooth during the entire swaging process, so as to preventits elongation, and the force of the cam exerted on the tooth thereforewidens the point of the tooth instead of elongating it; also, in theimprovements in the construction of other parts of the mechanism, all ofwhich improvements are hereinafter fully set forth and described, andillustrated in the accompanying drawings, in which- Figure 1 is a viewin side elevation of our improved saw-tooth-swaging machine. Fig. 2 is atop or plan view of the same. Fig. 3 is a Vertical longitudinal view ofone section of the machine on the line so between the sections, lookingin the direction of the arrow y in Figs. 2 and 5. Fig. I is a like Viewof the other section inverted, looking in the direc tion of the arrow 2in Figs. 2 and 5. Fig. 5

is a vertical transverse section of the machine on the line w in Figs. 1and 2, looking in the direction of the arrow.

In the drawings thus illustrating our invention the body of the machineis constructed of two halves or sections A and B, which are securedtogether in the following manner: In the meeting face of the section Athere is a longitudinal groove a, which extends the entire length of thesection, except at the rear end thereof there is a slotted abutment a,

through which the shank of an adjustingscrew 0 operates, and on the rearportion of the meeting face of the section B is a tongue I) b", whichfits into the rear portion of the groove a in the section A, the adjustingscrew 0 passing into the end of the tongue I) and operating toadjust the sections A and B upon each other, as and for thepurposehereinafter set forth, the sections A and B being clampedtogether by means of a setscrew D, passing through a slotted hole a inthe section A into a screw-threaded hole 19 in the section B, all ofwhich features are clearly shown in Figs. 3 and 4:. The upper edge ofthe inner face of the section A is cut back for about two-thirds of itslength from the rear end down to a shoulder a so as to leave an openslot E from the top down to the shoulder a when the sections A and B aretogether, and the remainder of the section A for the remaining one-thirdof its length is entirely removed down to the line a as shown in Figs.1, 2, 3, and 5. Just above the shoulder a there is an arm F, pivoted atits inner end to the section A, the rear end of which arm projects outbeyond the rear end of the open slot E, so as to operate as a sawguide,and in the section A there is a vertical screw f, which extends up underthe arm F, by means of which the rear end of said saw-guide arm can beraised or lowered, which features are clearly shown in Fig. 3.

. In a boss G on section A is mounted a clamp-screw G, provided with anoperatinghandle g, the inner end of which screw eX- tends through intothe slot E, and opposite the inner end of the clamp-screw G there is aserrated clamp-disk II on the section B, the shank h of which disk isscrew-threaded and passes through the section B, as illustrated in Fig.2, and is provided with a groove h in its inner end, in which ascrew-driver can 'be inserted, so as to adjust the clamp-disk II in andout from the inner face of the section B, this mechanism above describedoperating to clamp the saw in place during the operation of swaging atooth.

In a boss I on the section B is mounted a shaft 1, whichis provided withan operatinghandle 2', and on the inner end of the shaft 1' there isformed a swaging-cam 1 adapted to operate rot-atably on the top of averticallyadjustable anvil J, mounted in a vertical slot in the sectionA and provided with an adjusting-screw j under its lower end, by meanswhereof it can be adjusted up and down, as desired. Mounted in theslot,directlyin front of the anvil J, there is a depressible stop K, thelower end of which rests upon a spiral spring 7c, the upper end of thisstop engaging the point of the saw-tooth when in place to be operatedupon and remaining in contact with the point of the saw-tooth during theentire swaging operation, as illustrated in Fig. 1, and as the cam l isrotated the stop K is depressed thereby untiltheswagingof the tooth iscompleted, and as the stop prevents the expansion of the point of thetooth forward the metal is forced out sidewise, so as to broaden thepoint of the tooth, as desired,

and when the cam I is rotated backward after such operation the spring7i: moves the stop K up again to its normal position. In the slot a atthe frontend of the machine there is placed a removable arm L, which issecured in place by a set-screwland having on its outer end avertically-adjnstable slotted guide M. This device, however, isseparable from the remainder of the machine, as it is only used whenoperating upon circular-saws.

The face of the section A directly below the end of the cam I is cutaway, so as to form a recess a which enables the operator to watch theoperation of swaging the toothpoint and see whether the machine isoperating satisfactorily thereon.

Ve have hereinbefore described means for adjusting the sections A and Blongitudinally upon each other. The object of this adjustment is tobring the swaging-cam I more or less over the end of the anvil J, sothat it will engage a greater or less portion of the tooth to be swaged,as desired.

Having thus described our invention, so as to enable others to constructand use the same, what we claim as new, and desire to secure byLettersPatent of the United States, is

1. The combination in a saw-tooth-swaging machine, of means for clampingthe machine to a saw, a rotative swaging-cam, an anvil upon which theswaging-cam operates, anda stop in front of the anvil, adapted tocontact with the point of the saw-tooth during the entire swagin g 0peration,substantiallyas and for the purpose set forth.

2. The combination in a saw-tooth-swaging machine, of clamping devicesthereon for securing a saw therein, arotative swaging-cam, an anvilunder said cam, a depressible stop in front of the anvil against which.the point of the saw-tooth contacts during the entire swaging operation,and means for adjusting the cam and anvilwith relation to each other,substantially as and for the purpose set forth.

3. The combination in a saw-tooth-swaging maehine,of a frameconsistingof two sections, having a saw-slot between the upper portionsthereof, means for adjusting said sections upon each other, saw-clampingmechanism in said sections, a vertically-adjustable sawguide arm in thebottom of the saw-slot between said sections, a. rotative. swaging-caminone ofsaid sections, an anvil in the other section adapted to beoperated upon by said cam, and a depressible stop in front of saidanvil, and contacting with the point of' the saw-tooth during the entireswaging opera tion, substantially as and for the purpose set forth.

4. The combination in a saw-tooth-swaging machine, of two sections,tongue-and-grooved together near their lower edges andhaving an openslot between their upperedges, screw mechanism for the longitudinaladjustment of the sections upon each other, a set-screw for clampingthem together, a vertically-adjustable arm in the bottom of the slotbetween the sections, adjustable saw-clamping mechanism adapted to clampa saw in said slot, a rotatable swaging-cam mounted in one section, avertically-adjustable anvil arranged so that the swaging-cam willoperate thereon, a depressible stop in front of said anvil, and aremovable arm and. adjustable saw-guide thereon adapted to be secured tosaid swaging-machine, substantially as and for the purpose set forth.

In testimony whereofwe afiix our signatures in presence of twowitnesses.

FRANK E. BUTTS. I GUSTAV A. DUMBECK. \Vitnesses:

B. A. WALKER, H. E. FISH.

